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Fast Visible-Light Photopolymerization in the Presence of Multiwalled Carbon Nanotubes: Toward 3D Printing Conducting Nanocomposites

[Image: see text] A new photoinitiator system (PIS) based on riboflavin (Rf), triethanolamine, and multiwalled carbon nanobutes (MWCNTs) is presented for visible-light-induced photopolymerization of acrylic monomers. Using this PIS, photopolymerization of acrylamide and other acrylic monomers was qu...

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Autores principales: Gallastegui, Antonela, Dominguez-Alfaro, Antonio, Lezama, Luis, Alegret, Nuria, Prato, Maurizio, Gómez, María L., Mecerreyes, David
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8928478/
https://www.ncbi.nlm.nih.gov/pubmed/35575369
http://dx.doi.org/10.1021/acsmacrolett.1c00758
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author Gallastegui, Antonela
Dominguez-Alfaro, Antonio
Lezama, Luis
Alegret, Nuria
Prato, Maurizio
Gómez, María L.
Mecerreyes, David
author_facet Gallastegui, Antonela
Dominguez-Alfaro, Antonio
Lezama, Luis
Alegret, Nuria
Prato, Maurizio
Gómez, María L.
Mecerreyes, David
author_sort Gallastegui, Antonela
collection PubMed
description [Image: see text] A new photoinitiator system (PIS) based on riboflavin (Rf), triethanolamine, and multiwalled carbon nanobutes (MWCNTs) is presented for visible-light-induced photopolymerization of acrylic monomers. Using this PIS, photopolymerization of acrylamide and other acrylic monomers was quantitative in seconds. The intervention mechanism of CNTs in the PIS was studied deeply, proposing a surface interaction of MWCNTs with Rf which favors the radical generation and the initiation step. As a result, polyacrylamide/MWCNT hydrogel nanocomposites could be obtained with varying amounts of CNTs showing excellent mechanical, thermal, and electrical properties. The presence of the MWCNTs negatively influences the swelling properties of the hydrogel but significantly improves its mechanical properties (Young modulus values) and electric conductivity. The new PIS was tested for 3D printing in a LCD 3D printer. Due to the fast polymerizations, 3D-printed objects based on the conductive polyacrylamide/CNT nanocomposites could be manufactured in minutes.
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spelling pubmed-89284782022-03-18 Fast Visible-Light Photopolymerization in the Presence of Multiwalled Carbon Nanotubes: Toward 3D Printing Conducting Nanocomposites Gallastegui, Antonela Dominguez-Alfaro, Antonio Lezama, Luis Alegret, Nuria Prato, Maurizio Gómez, María L. Mecerreyes, David ACS Macro Lett [Image: see text] A new photoinitiator system (PIS) based on riboflavin (Rf), triethanolamine, and multiwalled carbon nanobutes (MWCNTs) is presented for visible-light-induced photopolymerization of acrylic monomers. Using this PIS, photopolymerization of acrylamide and other acrylic monomers was quantitative in seconds. The intervention mechanism of CNTs in the PIS was studied deeply, proposing a surface interaction of MWCNTs with Rf which favors the radical generation and the initiation step. As a result, polyacrylamide/MWCNT hydrogel nanocomposites could be obtained with varying amounts of CNTs showing excellent mechanical, thermal, and electrical properties. The presence of the MWCNTs negatively influences the swelling properties of the hydrogel but significantly improves its mechanical properties (Young modulus values) and electric conductivity. The new PIS was tested for 3D printing in a LCD 3D printer. Due to the fast polymerizations, 3D-printed objects based on the conductive polyacrylamide/CNT nanocomposites could be manufactured in minutes. American Chemical Society 2022-02-10 2022-03-15 /pmc/articles/PMC8928478/ /pubmed/35575369 http://dx.doi.org/10.1021/acsmacrolett.1c00758 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Gallastegui, Antonela
Dominguez-Alfaro, Antonio
Lezama, Luis
Alegret, Nuria
Prato, Maurizio
Gómez, María L.
Mecerreyes, David
Fast Visible-Light Photopolymerization in the Presence of Multiwalled Carbon Nanotubes: Toward 3D Printing Conducting Nanocomposites
title Fast Visible-Light Photopolymerization in the Presence of Multiwalled Carbon Nanotubes: Toward 3D Printing Conducting Nanocomposites
title_full Fast Visible-Light Photopolymerization in the Presence of Multiwalled Carbon Nanotubes: Toward 3D Printing Conducting Nanocomposites
title_fullStr Fast Visible-Light Photopolymerization in the Presence of Multiwalled Carbon Nanotubes: Toward 3D Printing Conducting Nanocomposites
title_full_unstemmed Fast Visible-Light Photopolymerization in the Presence of Multiwalled Carbon Nanotubes: Toward 3D Printing Conducting Nanocomposites
title_short Fast Visible-Light Photopolymerization in the Presence of Multiwalled Carbon Nanotubes: Toward 3D Printing Conducting Nanocomposites
title_sort fast visible-light photopolymerization in the presence of multiwalled carbon nanotubes: toward 3d printing conducting nanocomposites
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8928478/
https://www.ncbi.nlm.nih.gov/pubmed/35575369
http://dx.doi.org/10.1021/acsmacrolett.1c00758
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